Wireless communication apparatus and method of wireless communication

Abstract

One of objects of a wireless communication apparatus according to the present invention is to realize stable communication regardless of received signal strength indication and information amount. The wireless communication apparatus for communicating in an autonomous distributed wireless network includes a detection unit which generates a detection signal by detecting a first wireless signal from a first wireless apparatus; a wireless circuit which receives a second wireless signal relating to said first wireless signal, transmitted from a second wireless apparatus which received said first wireless signal; a signal estimation unit which estimates said detection signal and the received second wireless signal; a signal selector which selects either said detection signal or the received second wireless signal, based on an estimation result of said signal estimation unit; and a demodulator which demodulates the signal selected by said signal selector.

1. A wireless communication apparatus for communicating in an autonomous distributed wireless network, comprising:
 a detection unit which generates a detection signal by detecting a first wireless signal from a first wireless apparatus; 
 a wireless circuit which receives a second wireless signal relating to said first wireless signal, transmitted from a second wireless apparatus which received said first wireless signal; 
 a signal estimation unit which estimates said detection signal and the received second wireless signal; 
 a signal selector which selects either said detection signal or the received second wireless signal, based on an estimation result of said signal estimation unit; 
 a combination unit which combines said detection signal with the received second wireless signal; 
 a diversity switch which selects whether the detection signal and the second wireless signal are supplied to either of the signal selector or the combining unit; and 
 a demodulator which demodulates either of the signal selected by said signal selector or the signal selected by the diversity switch. 
 
   
   
     2. The apparatus according to  claim 1 , further comprising:
 a first antenna which receives said first wireless signal; and 
 a second antenna which receives said second wireless signal. 
 
   
   
     3. The apparatus according to  claim 1 , further comprising:
 an antenna capable of matching said first and second wireless signals in which frequency bands are different from each other; and 
 a signal distributor which separates said first and second wireless signals received by said antenna, supplies said first wireless signal to said detection unit, and supplies said second wireless signal to said wireless circuit. 
 
   
   
     4. The apparatus according to  claim 1 ,
 wherein said wireless circuit transmits said detection signal to said second wireless apparatus. 
 
   
   
     5. A method of wireless communication between a plurality of wireless apparatus in an autonomous distributed wireless network, comprising:
 generating a detection signal by detecting a first wireless signal from a first wireless apparatus; 
 receiving a second wireless signal relating to said first wireless signal transmitted from a second wireless apparatus which received said first wireless signal; 
 estimating said detection signal and the received second wireless signal; 
 selecting either said detection signal or the received wireless signal, based on the estimation using a signal selector; 
 outputting information included in the selected wireless signal in the selecting; 
 combining said detection signal with the received second wireless signal in a combining unit; 
 selecting whether the detection signal and the second wireless signal are supplied to either of the signal selector or the combining unit using a diversity switch; and 
 demodulating either of the signal selected by said signal selector or the signal selected by the diversity switch.